Synthesis 2015; 47(01): 55-64
DOI: 10.1055/s-0034-1379032
paper
© Georg Thieme Verlag Stuttgart · New York

Mild and Selective Deprotection of tert-Butyl(dimethyl)silyl Ethers with Catalytic­ Amounts of Sodium Tetrachloroaurate(III) Dihydrate

Qi Zhang*
a   School of Chemistry and Chemical Engineering, Shaanxi Normal University, 199 South Chang’an Road, Xi’an 710062, P. R. of China   Email: qiqizhang@snnu.edu.cn
,
Xiuqin Kang
a   School of Chemistry and Chemical Engineering, Shaanxi Normal University, 199 South Chang’an Road, Xi’an 710062, P. R. of China   Email: qiqizhang@snnu.edu.cn
,
Lei Long
a   School of Chemistry and Chemical Engineering, Shaanxi Normal University, 199 South Chang’an Road, Xi’an 710062, P. R. of China   Email: qiqizhang@snnu.edu.cn
,
Lijuan Zhu
a   School of Chemistry and Chemical Engineering, Shaanxi Normal University, 199 South Chang’an Road, Xi’an 710062, P. R. of China   Email: qiqizhang@snnu.edu.cn
,
Yonghai Chai*
b   Key Laboratory of Applied Surface and Colloid Chemistry, MOE, Shaanxi Normal University, 199 South Chang’an Road, Xi’an 710062, P. R. of China   Fax: +86(29)81530783   Email: ychai@snnu.edu.cn
› Author Affiliations
Further Information

Publication History

Received: 04 June 2014

Accepted after revision: 05 August 2014

Publication Date:
15 September 2014 (online)


Abstract

A simple and mild method for the removal of tert-butyl(dimethyl)silyl (TBS) protecting groups with catalytic amounts of sodium tetrachloroaurate(III) dihydrate is described. The procedure permits selective deprotection of aliphatic TBS ethers in good to excellent yields in the presence of aromatic TBS ethers, aliphatic triisopropylsilyl ethers, aliphatic tert-butyl(diphenyl)silyl ethers, or sterically hindered aliphatic TBS ethers. Additionally, TBS ethers can also be transformed into 4-methoxybenzyl ethers or methyl ethers in one pot by using larger quantities of the catalyst and a higher reaction temperature.